Rail connector



FIG. 1 is a bottom view of a rail connector showing my new design;

FIG. 2 is a top view of a rail connector showing my new design;

FIG. 3 is a right side view of a rail connector showing my new design;

FIG. 4 is a left side view of a rail connector showing my new design; and,

FIG. 5 is a top perspective view of a rail connector showing my new design. 

CLAIM I claim the ornamental design for a rail connector, as shown and described. 